Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Cut the chicken breast and sweet potato into uniform 1-inch cubes to ensure they cook at the same rate.
Chop the broccoli into bite-sized florets and slice the red bell pepper into 1-inch squares.
In a large mixing bowl, combine the chicken cubes, sweet potato, broccoli, and bell peppers.
Drizzle the olive oil over the mixture and sprinkle with sea salt, black pepper, oregano, garlic powder, and turmeric.
Toss everything thoroughly with your hands or a large spoon until the chicken and vegetables are evenly coated in the golden spice blend.
Spread the ingredients in a single layer on the prepared baking sheet, making sure not to overcrowd the pan so the vegetables roast rather than steam.
Roast for 20 to 25 minutes, or until the chicken is cooked through and the sweet potatoes are fork-tender with slightly caramelized edges.
Remove from the oven and let the chicken rest for a few minutes before serving to keep it juicy.